Network Engineer III

Posted Yesterday
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London, Greater London, England, GBR
Hybrid
Senior level
Cloud • Computer Vision • Information Technology • Sales • Security • Cybersecurity
Define your future at CrowdStrike.
The Role
Build, operate, and scale CrowdStrike's global backbone and hybrid cloud networks. Design and implement IP and optical solutions, drive capacity planning, evaluate technologies, automate with IaC and CI/CD, support cloud networking, lead projects from ideation to implementation, and participate in 24x7 on-call rotation.
Summary Generated by Built In

As a global leader in cybersecurity, CrowdStrike protects the people, processes and technologies that drive modern organizations. Since 2011, our mission hasn’t changed — we’re here to stop breaches, and we’ve redefined modern security with the world’s most advanced AI-native platform. We work on large scale distributed systems, processing almost 3 trillion events per day and this traffic is growing daily. Our customers span all industries, and they count on CrowdStrike to keep their businesses running, their communities safe and their lives moving forward. We're proud to work for a mission-driven company leveraging AI to transform the way we work. CrowdStrikers drive their careers through flexibility and autonomy while also being expected to contribute to a culture of responsible AI adoption, experimentation, and innovation. We use an AI-first mindset as a force multiplier to proactively and continuously accelerate execution, build expertise, uncover insights, and solve complex problems. We’re always looking to add talented CrowdStrikers to the team who have limitless passion, a relentless focus on innovation and a fanatical commitment to our customers, our community and each other. Ready to join a mission that matters? The future of cybersecurity starts with you.


About the Role:

CrowdStrike is looking for a network engineer who has a solid track record of building and operating hyper-scale hybrid cloud networks. In this role, you will build and maintain the production backbone network as well as services across multiple cloud service providers. You will develop and support both the IP and Optical technologies that connect our data centers as well as edge connectivity. In addition, you will own major improvement initiatives from ideation to implementation, including funding, planning and operational support.

What You’ll Do:

  • Build and maintain a high-performance and fault-tolerant production network at-scale

  • Analyze requirements and develop solutions of technical problems based on complex business needs

  • Hold regular, frequent project meetings to address challenges and drive milestones

  • Represent the network team as a technical leader and provide direction and insight for projects, discovery, and problem management

  • Improve the reliability and efficiency of network operations and practices

  • Drive capacity planning, forecasting, and create plans for growth

  • Evaluate technologies for scale, security, and maintainability

  • Support the development, testing and integration of new hardware and software platforms.

  • Participate in 24x7 on-call rotation

What You’ll Need:

  • 5+ years of experience in building and maintaining large scale, backbone and complex data center network infrastructure

  • Expert level knowledge in large scale IP networking technologies and protocols such as: MP-BGP, OSPF, ISIS, VRF, VxLAN, EVPN, QoS, GRE, IP SEC, DNS, MACsec

  • Expert in building and operating large scale networks using technologies, such as  optical/DWDM, CDN, edge network security, DDoS mitigation, load balancing

  • Experience building solutions in cloud service providers such as AWS, GCP, OCI

  • Hands-on experience with infrastructure-as-code using tools such as Python, Ansible, YAML, or Netconf/YANG, Chef, Puppet

  • Understanding of Git workflows, CI/CD concepts and how they can be applied to network automation and a testing framework

  • Experience in building end to end pipelines with CI tools such as Jenkins

  • Proficient with various networking vendors such as Arista, Palo Alto, Juniper, Adva, Nokia, Cisco, HP, etc

  • Proven experience utilizing AI technologies to enhance decision-making, streamline workflows and processes, improve efficiency and drive business outcomes.

Bonus Points:

  • Work experience in data center, telecom, SaaS, or cloud operations companies.

  • Experience with building and supporting optical infrastructure such as Infinera, Ciena, Nokia.

  • Proficiency with excel, and other modeling systems.

  • Ability to communicate technical detail into succinct and fact-based business terminology, both verbally and in writing.

  • Customer-focused mindset, with demonstrated skill in managing expectations, providing proactive status updates, and producing high-quality work products.

  • Ability to use independent judgment to make sound, justifiable decisions and take action to solve problems.

  • Strong leadership skills with demonstrated ability to prioritize and execute in a methodical and disciplined manner.

  • Ability to plan, organize and prioritize work independently and meet deadlines.

  • Ability to work in a collaborative, team environment

#LI-GO1

Benefits of Working at CrowdStrike:

  • Market leader in compensation and equity awards

  • Comprehensive physical and mental wellness programs

  • Competitive vacation and holidays for recharge

  • Paid parental and adoption leaves

  • Professional development opportunities for all employees regardless of level or role

  • Employee Networks, geographic neighborhood groups, and volunteer opportunities to build connections

  • Vibrant office culture with world class amenities

  • Great Place to Work Certified™ across the globe

CrowdStrike is proud to be an equal opportunity employer. We are committed to fostering a culture of belonging where everyone is valued for who they are and empowered to succeed. We support veterans and individuals with disabilities through our affirmative action program.

CrowdStrike is committed to providing equal employment opportunity for all employees and applicants for employment. The Company does not discriminate in employment opportunities or practices on the basis of race, color, creed, ethnicity, religion, sex (including pregnancy or pregnancy-related medical conditions), sexual orientation, gender identity, marital or family status, veteran status, age, national origin, ancestry, physical disability (including HIV and AIDS), mental disability, medical condition, genetic information, membership or activity in a local human rights commission, status with regard to public assistance, or any other characteristic protected by law. We base all employment decisions--including recruitment, selection, training, compensation, benefits, discipline, promotions, transfers, lay-offs, return from lay-off, terminations and social/recreational programs--on valid job requirements.

If you need assistance accessing or reviewing the information on this website or need help submitting an application for employment or requesting an accommodation, please contact us at [email protected] for further assistance.

Skills Required

  • 5+ years building and maintaining large-scale backbone and data center network infrastructure
  • Expert knowledge of IP networking protocols: MP-BGP, OSPF, ISIS, VRF, VxLAN, EVPN, QoS, GRE, IPsec, DNS, MACsec
  • Expertise with optical/DWDM, CDN, edge network security, DDoS mitigation, and load balancing
  • Experience building solutions in cloud providers: AWS, GCP, OCI
  • Hands-on experience with infrastructure-as-code and automation: Python, Ansible, YAML, Netconf/YANG, Chef, Puppet
  • Understanding of Git workflows, CI/CD concepts, and network testing frameworks
  • Experience building end-to-end pipelines with CI tools such as Jenkins
  • Proficiency with networking vendors: Arista, Palo Alto, Juniper, Adva, Nokia, Cisco, HP
  • Proven experience utilizing AI technologies to enhance decision-making and automation
  • Participate in a 24x7 on-call rotation and provide operational support
  • Work experience in data center, telecom, SaaS, or cloud operations companies
  • Experience with optical vendors/infrastructure such as Infinera, Ciena, Nokia
  • Proficiency with Excel and modeling systems
  • Strong communication skills to translate technical detail into business terminology
  • Customer-focused mindset and ability to manage expectations and produce high-quality deliverables
  • Ability to use independent judgment, lead initiatives, plan, organize and prioritize work
  • Ability to work collaboratively in a team environment

What the Team is Saying

Andrew C.
Lauren P.
Brian P.
Alexa Z.
Theo K.
Sara I.
Lam N.
Lauren B.
Adeeb C.
Kristan C.
Alena C.
Thaddeus M.
Alyssa J.
KT T.

CrowdStrike Compensation & Benefits Highlights

  • Healthcare Strength Company materials outline medical, dental, and vision coverage alongside HSAs/FSAs and an Employee Assistance Program, indicating a comprehensive health foundation.
  • Parental & Family Support Official documents include paid family leave, family care resources, and adoption and infertility assistance, signaling meaningful support for caregivers.
  • Equity Value & Accessibility Equity grants are paired with an Employee Stock Purchase Plan with a lookback discount, enhancing participation in company ownership.

CrowdStrike Insights

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The Company
HQ: Austin, TX
10,000 Employees
Year Founded: 2011

What We Do

CrowdStrike has redefined security with the world’s most advanced cloud-native platform that protects and enables the people, processes and technologies that drive modern enterprise. Tested and proven, the world's largest organizations trust CrowdStrike to stop breaches with unparalleled protection against the most sophisticated cyberattacks. The CrowdStrike culture has been built upon our Core Values since the day we began. We are Fanatical About the Customer, Relentlessly Focused on Innovation and believe that our Limitless Passion drives Unlimited Potential for every CrowdStriker. As a purpose-built remote-first company, we believe cultivating a connected culture for every employee, no matter where they are in the world, is a key ingredient in building a high-performing, diverse team. We don’t have a mission statement. We’re on a mission—to stop breaches. Ready to join a mission that matters?

Why Work With Us

We have a culture that celebrates achievement, encourages flexibility and innovation and thrives on teamwork. We all work towards a single mission: to stop breaches. This common goal drives a sense of community and connection among our people across the globe.

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CrowdStrike Offices

Hybrid Workspace

Employees engage in a combination of remote and on-site work.

Typical time on-site: Flexible
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